Abstract
In this paper several possible structures of dislocations in the diamond lattice are discussed. Special attention is paid to the occurrence of broken bonds in the core of the dislocations and in jogs; for instance, edge-type dislocations can occur in configurations without broken bonds. Jogs can act as a source or sink of interstitials and vacancies; in the diamond lattice this is complicated by the existence of two kinds of atom sites. The most probable types of partial dislocations and the mechanism of their formation from simple dislocations are discussed. In the last section something is said about the occurrence of partial dislocations at twin boundaries and about a line imperfection with zero Burgers vector which may occur at the end of a twin lamella.
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